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Home > CCG > Chapter 1 > Lesson 1.2.5 > Problem 1-97


Copy the diagrams below on graph paper. Then find the result when each indicated transformation is performed.  1-97 HW eTool (Desmos)  

  1. Reflect Figure across line .

    Figure A is a triangle on the left side of the vertical line of reflection, l. Figure A starts 2 units to the left of, l.  Then draw diagonally down 1 & left 4.  Then draw diagonally down 6 and to the right 3.  Then draw diagonally up 7 and right 1 to enclose Figure A.

  1. Rotate Figure clockwise () about point .

    Start a point P. Draw up, 5, left 3, down 3, left 1, Diagonally down 2 & right 1, Then right 3 to enclose the figure at, P.   Rotate Figure B 90 degrees clockwise about point P.

  1. Reflect Figure across line .

    Figure C is an enclosed figure. Starting at the upper left corner: right 2, diagonal right 1 & down 1, then, down 3, left 2, down 1, left 1, up 5 to enclose the figure. The line of reflection, m, is drawn diagonally to the right of the figure. Line, m, starts 9 units down from the start of Figure C. The line has a slope of 1.

  1. Rotate Figure about point .

    The point of reflection is, Q. Figure D starts left, 1, and up 2 from Q. Then draw diagonally up 2 and right 2. Then right, 4. Down, 3. Left, 4. Finally, diagonally up 1 and left 2 to enclose Figure D.

The eTool below shows the transformations for all parts.
Click the link at right for the full version of the eTool: 1-97 HW eTool (Desmos)